Rev. 1.00
10
October 27, 2020
Rev. 1.00
11
October 27, 2020
ESK32-A3A31 33 SEG × 8 COM
Monochrome LCD User Manual
ESK32-A3A31 33 SEG × 8 COM
Monochrome LCD User Manual
2.4 ESK32-A3A31 Segment Switch – SW1, SW2
MCU can select an unused LCD Segment to output dummy signal and connect the rest of the unused
LCD Segment through SW1 and SW2 to avoid ghost phenomenon and affect the display effect.
Switch No.
Description
Switch No.
Description
1
S14
2
S16
3
S18
4
S20
5
S22
6
S24
7
S26
8
S28
9
S30
10
S32
Table 6. Unused Segment Switch SW1 (ESK32-A3A31)
Switch No.
Description
Switch No.
Description
1
S31
2
S29
3
S27
4
S25
5
S23
6
S21
7
S19
8
S17
9
S15
10
S13
Table 7. Unused Segment Switch SW2 (ESK32-A3A31)
2.5 ESK32-A3A31 LCD Map
The mapping of pins to LCD segment is provided in the following figures.
57352
SK
--
--
--
--
--
M_S16 M_S17
--
I/O
Pin
--
--
--
--
PD1
PD2
--
--
2x001A
Board
--
--
--
S4
S5
--
--
--
CN4
No.
--
--
90
91
--
--
--
--
LCD
--
SEG5
SEG6
--
--
--
--
--
CN3
No.
37
36
M_C5
PC11
C3
78
COM4
32
V-OFF
V-L4
M_C6 PC12
C4
79
COM5
31
--
V-ON
M_C7 PC13
C5
83
COM6
30
V-L1
V-L3
M_C2
PA8
C6
84
COM7
29
--
V-L2
Figure 10. Voice Display (ESK32-A3A31)
